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Huixinlong refractory introduces common unshaped refractory materials to you

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News center
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Release time:
2020/03/27 13:50
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Common unshaped refractory materials can be divided into castable, plastic, ramming material, gunning material, projective material and coating according to construction methods and material propertie
Common unshaped refractory materials can be divided into castable, plastic, ramming material, gunning material, projective material and coating according to construction methods and material properties. Huixinlong refractory introduces the castable for you.
Castable is a kind of granular and powdery material made of refractories, which is composed of a certain amount of binder and water. It has high fluidity and is suitable for pouring construction. It does not need heating to harden the common amorphous refractories. It consists of refractory aggregate, powder, binder, admixture, water or other liquid materials. Generally in the use of the site by pouring, vibration or tamping method casting molding, can also be made into the use of prefabricated parts.
Refractory castable is a kind of widely used and unfixed refractory. It is mainly used for the construction of various heating furnace lining and other integral structures. Some high quality varieties can also be used in smelting furnaces. For example, aluminate cement refractory castable can be widely used in various heating furnaces and other thermal equipment without slag and acid-base erosion. In the places where the working temperature is higher due to the erosion of molten iron, molten steel and slag, such as the tapping tank, steel ladle, blast furnace body, and tapping ditch, the fire-resistant castable made of high-quality granular and powdery materials with high alumina content and good sintering, which is composed of low calcium and pure high alumina cement, can be used. Moreover, the phosphate refractory castable can be widely used in heating furnace and soaking pit for heating metal, as well as in coke oven and cement kiln. In some parts of metallurgical furnaces and other vessels which are in direct contact with slag and molten metal, the use of high-quality phosphate refractory castables for repair also has a good effect.
With the increase of the ratio of amorphous refractories in refractories, refractory castables will develop rapidly, meanwhile, the quality of varieties will be improved correspondingly. The emphasis will still be on the development of low cement, ultra-low cement and cement-free refractory castables. In combination with resource conditions, homogenization and high-quality raw materials and special aggregates will be selected to improve the basic composition. Fiber reinforced refractory casting will be studied and popularized In addition, develop special castables (such as the cast ditch, steel barrel lining, etc.) and materials with special functions (such as wear resistance, acid resistance, alkali resistance, high-strength heat insulation, high-strength and high heat conduction, etc.), improve production equipment and construction supporting machines and tools in production and application technology.